Power and Energy
PStokcal/hr
Convert metric horsepower (PS) to kilocalories per hour (kcal/hr).
Factor1 PS = 632.4151 kcal/hr
Converter
PS
Accepts numbers or expressions, e.g. 150 + 14.7
Result
kcal/hr
Rendered to 6 significant figures.
Formula
Formula
kcal/hr = PS × 632.4151
Multiply any value in metric horsepower by 632.4151 to obtain the value in kilocalories per hour.
Worked example
Convert 1 PS to kcal/hr.
- 01Start with 1 PS.
- 02Multiply by the conversion factor: 1 × 632.4151 = 632.415 kcal/hr.
Result1 PS = 632.415 kcal/hr
Conversion table
| PS | kcal/hr |
|---|---|
| 1 | 632.42 |
| 2 | 1264.8 |
| 5 | 3162.1 |
| 10 | 6324.2 |
| 20 | 12648 |
| 50 | 31621 |
| 100 | 63242 |
| 200 | 1.2648e+5 |
| 500 | 3.1621e+5 |
| 1000 | 6.3242e+5 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from PS to kcal/hr?
1 PS equals 632.4151 kcal/hr. To convert, multiply the value in metric horsepower by 632.4151.
How do I convert 1 PS to kcal/hr?
1 PS = 632.415 kcal/hr. For any value, multiply by 632.4151.
How do I convert kcal/hr back to PS?
Divide by the same factor — or equivalently, multiply by 0.00158124. So 1 kcal/hr = 0.00158124 PS.
When would I need to convert metric horsepower to kilocalorie per hour?
Power conversions are common when comparing motor ratings (often kW or hp), thermal duty (BTU/hr or kW), and utility consumption in mixed-unit projects.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).